Foreword

Publishing information

This British Standard is published by BSI and came into effect on 30 June 2010. It was prepared by Technical Committee GSE/30, Gas installations (1st, 2nd and 3rd family gases). A list of organizations represented on this committee can be obtained on request to its secretary.

Supersession

This British Standard supersedes BS 5546:2000+A1:2005, which is withdrawn.

Information about this document

The structure follows the approach used in other gas installation standards. Requirements, with corresponding commentary and recommendations, cover equipment selection and pre-installation, installation and post-installation, to which maintenance has been added as a specific detail.

In line with BS 5440‑1, this revision has acknowledged that European work on chimney standards has brought about the need in British Standards to redefine chimney concepts and adopt common terminology consistent with the range of products used across the whole European community (the general requirements for which are given in BS EN 1443) where a chimney is treated as a structure containing a flue (the passageway) and might include a liner (inner wall), insulation and an outer wall. The common terminology in UK industry, which has regarded a chimney as a masonry structure generally associated with solid fuel appliances, has been superseded.

The requirements of this specification are supported by recommendations. To comply with this specification, it is necessary to comply with all its requirements. The operative may depart from recommendations, but would be expected to have good reasons for doing so.

This standard allows manufacturers’ instructions to specify a method of installation, testing, commissioning or maintenance which differs in points of detail from this standard. This reference to manufacturers’ instructions is allowed only where it will result in at least an equivalent level of safety. In such circumstances, it is important that the manufacturer’s instructions are followed.

Presentational conventions

The provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

Contractual and legal considerations

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

Amendments/corrigenda issued since publication

Date	Text affected

Attention is drawn to the following statutory regulations:

• The Gas Safety (Installation and Use) Regulations 1998 [1];
• The Building Regulations 2000 (for England and Wales), as amended [2];
• The Building (Amendment) Regulations (Northern Ireland) 2010 [3];
• The Building (Scotland) Regulations 2004, as amended [4];
• The Building Regulations 2007 (for the Isle of Man) [5].

In this document, the following national regulations are referred to as the “Water Fittings Regulations [6]”:

• The Water Supply (Water Fittings) Regulations 1999, in England & Wales;
• The Water Byelaws 2004 (Scotland), in Scotland;
• The Water Supply (Water Fittings) Regulations (Northern Ireland) 2009, in Northern Ireland.

BS 5546:2010

Specification for installation and maintenance of gas-fired water-heating appliances of rated input not exceeding 70 kW net

Current

Published:

30 Jun 2010